ATI RN
Pediatric Musculoskeletal Disorders Questions
Question 1 of 5
In periodic paralysis, all the following are precipitating factors EXCEPT
Correct Answer: A
Rationale: A heavy fat meal is not a recognized trigger for periodic paralysis; the others (e.g., licorice via hypokalemia) can precipitate attacks.
Question 2 of 5
Myasthenia gravis should be differentiated from other causes of neuromuscular blockade as organophosphate chemicals, botulism, and tick paralysis. Of the following, the MOST specific diagnostic test is
Correct Answer: C
Rationale: Anti-acetylcholine receptor (AChR) antibodies are the most specific diagnostic test for myasthenia gravis, present in 85-90% of cases.
Question 3 of 5
Enhancers of nonheme iron absorption are
Correct Answer: A
Rationale: Ascorbic acid (vitamin C) is explicitly listed as an enhancer of nonheme iron absorption in the text, making A the primary correct choice.
Question 4 of 5
Volume depletion without renal insufficiency may cause a disproportionate increase in the BUN, with little or no change in the creatinine concentration. This increase in the BUN may be absent or blunted in a child with
Correct Answer: C
Rationale: Poor protein intake reduces urea production, blunting BUN elevation, as BUN reflects protein metabolism.
Question 5 of 5
A specific sign of severe dehydration is
Correct Answer: C
Rationale: Reduced and mottled cutaneous perfusion is a specific sign of severe dehydration, indicating poor circulation.